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Perfect Fit: OE style bayonet hangers are used to maintain a stable pipe location during high vibration and high heat conditions
not intended for street applications
Easy to install
Increased air velocity and flow improves performance and throttle response
speedometer
BBK 99-03 Ford F Series Truck 5.4 Shorty Tuned Length Exhaust Headers - 1-5/8 Silver Ceramic 1974-mercury-marquis-brougham-esi3709306 Perfect Fit: OE style bayonetThese BBK Performance shorty tuned Length exhaust Headers are designed and constructed as direct fit replacements for all 99 04 Ford 5. 4L F150 truck applications. Each header is manufactured with 1 5 8 in. CNC mandrel bent tubing that offers unrestricted exhaust flow for increased horsepower and torque over factory OEM manifolds. BBK tuned Length headers offer improved scavenging waves for better combustion, which leads to improved performance and
